EP3631237B1 - Partition member for separating a working chamber and a compensation chamber in a hydraulic mounting and a hydraulic mounting - Google Patents

Partition member for separating a working chamber and a compensation chamber in a hydraulic mounting and a hydraulic mounting Download PDF

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Publication number
EP3631237B1
EP3631237B1 EP18721762.5A EP18721762A EP3631237B1 EP 3631237 B1 EP3631237 B1 EP 3631237B1 EP 18721762 A EP18721762 A EP 18721762A EP 3631237 B1 EP3631237 B1 EP 3631237B1
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EP
European Patent Office
Prior art keywords
channel
separating device
sealing element
damping
bearing
Prior art date
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Application number
EP18721762.5A
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German (de)
French (fr)
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EP3631237A1 (en
Inventor
Wolfgang Beckmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vibracoustic SE
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Vibracoustic SE
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Publication date
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Publication of EP3631237A1 publication Critical patent/EP3631237A1/en
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Publication of EP3631237B1 publication Critical patent/EP3631237B1/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • F16F13/08Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
    • F16F13/10Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like
    • F16F13/105Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like characterised by features of partitions between two working chambers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K5/00Arrangement or mounting of internal-combustion or jet-propulsion units
    • B60K5/12Arrangement of engine supports
    • B60K5/1208Resilient supports
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • F16F13/08Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
    • F16F13/18Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper characterised by the location or the shape of the equilibration chamber, e.g. the equilibration chamber, surrounding the plastics spring or being annular
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2224/00Materials; Material properties
    • F16F2224/02Materials; Material properties solids
    • F16F2224/025Elastomers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2226/00Manufacturing; Treatments
    • F16F2226/04Assembly or fixing methods; methods to form or fashion parts
    • F16F2226/045Press-fitting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00Purpose; Design features
    • F16F2230/30Sealing arrangements

Definitions

  • the present invention relates to a separating device for separating a working chamber and a compensation chamber of a hydraulically damping bearing, having a first nozzle disk and a second nozzle disk, which are made of a first material and form a damping channel which connects the working chamber and the compensation chamber.
  • the invention also relates to a hydraulically damping bearing for mounting a motor vehicle assembly with such a separating device.
  • a hydraulically damping bearing of the type mentioned at the beginning is used to mount a motor vehicle unit, such as a motor vehicle engine or a transmission, on a motor vehicle body in order to dampen the vibrations generated by the motor vehicle unit.
  • a hydraulically damping bearing has a support bearing for fastening the motor vehicle assembly to the bearing and a support, which are connected to one another by an elastomeric suspension spring.
  • the suspension spring together with the support, delimits a working chamber which is separated from a compensation chamber by a separating device.
  • the compensation chamber is limited by a compensation membrane.
  • the working chamber and the compensation chamber are filled with a fluid and connected to one another via a damping channel introduced into the separating device.
  • the damping of the vibrations introduced by the motor vehicle assembly takes place via the hydraulic system, which is formed from the working chamber, the compensation chamber and the damping channel.
  • the introduced vibrations lead to a movement of the suspension spring, whereby hydraulic pressure is built up inside the working chamber.
  • the fluid flows from the Working chamber via the damping channel into the compensation chamber. Due to the small diameter of the damping channel and the associated high mechanical transmission, which results from the equivalent, displaced cross section of the suspension spring in relation to the damping channel cross section, the vibrations introduced are damped or canceled.
  • US 2013/038006 A1 discloses a hydraulically damping bearing which has an inner sleeve, an outer sleeve and two elastomer bodies connecting the two sleeves to one another.
  • the two elastomer bodies delimit two chambers filled with liquid, which are separated from one another by a partition.
  • the partition wall has an annular rigid element and an elastic element which are connected to one another via a rigid tubular element. Channels that connect the two chambers to one another are formed between the annular element and the elastic element.
  • EP 1 574 743 A1 a hydraulically damping bearing with a support and a support bearing, which are connected to one another by an elastomeric suspension spring, the suspension spring delimiting a working chamber which is separated from a compensation chamber by a separating device, the two chambers being connected to one another via a damping channel introduced into the separating device are.
  • the separating device has a main body and a cover body, the cover body comprising a metal plate and an elastomeric sealing layer vulcanized thereon.
  • Out JP S61 144443 A shows a hydraulically damping bearing, the working chambers of which are separated by a separating device, the separating device forming a damping channel which connects the two chambers to one another.
  • the separating device comprises two nozzle disks, between which a sealing ring is arranged.
  • a hydraulic bearing with a partition wall into which a damping channel is introduced consists of two sub-channels, the first sub-channel with a first half of a nozzle cage and the second channel and a second half of the nozzle cage are formed in one piece and merge into one another.
  • the membrane has a channel separation that is thicker in relation to the sub-regions adjoining on both sides in the radial direction.
  • a hydraulic bearing comprising a hydraulic module with a suspension spring, which supports a bearing core, encloses a working chamber and is supported on an outer ring on which a cover is fixed, one separated from the working chamber by an intermediate plate and Compensating chamber bounded by a compensating membrane, the compensating chamber and the working chamber being filled with a damping fluid and being connected to one another in a fluid-conducting manner via a damping channel arranged in the intermediate plate, and a housing accommodating the hydraulic module.
  • a hydraulic bearing with two chambers filled with hydraulic fluid, separated by a nozzle disk, which are connected to one another in a fluid-conducting manner by a channel introduced into the nozzle disk.
  • the nozzle disk is designed in two parts, with a switching membrane inserted between the two parts, which closes a bypass channel in the nozzle disk between the two chambers in a flow-controlled manner, provided that the axial load on the hydraulic bearing exceeds a predetermined maximum load.
  • the present invention is based on the object of creating a separating device and a hydraulically damping bearing which have improved damping.
  • a separating device for separating a working chamber and a compensation chamber of a hydraulically damping bearing which has a first nozzle disk and a second nozzle disk which are made of a first material and which form a damping channel which connects the working chamber and the compensation chamber to one another, wherein the first nozzle disk has a sealing element made of a second material which rests against the second nozzle disk in order to seal the damping channel.
  • both nozzle disks are each provided with an opening through which fluid can flow into the damping channel and / or out of the damping channel.
  • the first nozzle disk and the sealing element are produced in a two-component injection molding process.
  • the sealing element can be produced and connected to the first nozzle disk in a simple, reliable and cost-effective manner.
  • First the first material can be injected into a cavity of an injection mold and then the second material is injected into the cavity.
  • the first material and the second material can be injected into a cavity of an injection mold at the same time.
  • the first material is a fiber-reinforced plastic and the second material is a thermoplastic elastomer.
  • a separating device made of fiber-reinforced plastic has a low weight and at the same time a high strength against the hydraulic pressure occurring in the working chamber.
  • One made from thermoplastic elastomer Sealing element has sufficient sealing properties to seal the damping channel.
  • the sealing element surrounds the first nozzle disk on the outer circumference.
  • the sealing element can be designed as a sealing edge which surrounds the first nozzle disk on the outer circumference.
  • the sealing element can be designed as a sealing lip protruding from the first nozzle disk, in particular vertically protruding, which surrounds the first nozzle disk on the outer circumference.
  • the second nozzle disk has a receiving opening into which the first nozzle disk is inserted.
  • the first nozzle disk inserted into the receiving opening of the second nozzle disk advantageously forms the damping channel together with the second nozzle disk.
  • the second nozzle disk can have a channel-shaped recess which is closed by the first nozzle disk, in particular a section of the first nozzle disk.
  • the sealing element is preferably in sealing contact with an inner circumferential wall of the receiving opening in order to reliably seal the damping channel.
  • the first nozzle disk is advantageously inserted into the receiving opening by means of a press fit in order to ensure sufficient sealing of the damping channel.
  • the receiving opening has a circumferential shoulder on which the sealing element rests.
  • the first nozzle disk is inserted into the receiving opening, in particular pressed in, until the sealing element comes to rest on the shoulder.
  • the combination of the interference fit between the inner circumferential wall and the sealing element and the contact between the sealing element and a shoulder ensures that the damping channel is reliably sealed.
  • a channel is formed from a first channel section and a second channel section, which are separated from one another by the first nozzle disk and sealed from one another by means of the sealing element.
  • a double-deck duct enables the attenuation to be shifted to low frequencies and has an optimized decoupling with the maximum possible open area.
  • the first nozzle disk advantageously has the first channel section and the second nozzle disk has the second channel section.
  • the first channel section and the second channel section are arranged one above the other.
  • the two channel sections can be arranged next to one another.
  • the first nozzle disk has on the outer circumference a channel which rests against the inner circumferential wall of a receiving opening in order to form the first channel section, the channel having a first leg, a second leg and a base connecting the two legs, with an the sealing element is arranged at a free end of the first leg.
  • the channel is preferably C-shaped in cross section.
  • the first leg separates the two channel sections from one another, wherein the one arranged at the free end of the first leg,
  • the injection-molded sealing element seals the two channel sections from one another.
  • a membrane is accommodated between the nozzle disks.
  • the membrane is made of an elastic, in particular elastomeric material and is used to decouple high-frequency, small-amplitude vibrations.
  • the membrane vibrates with high-frequency, small-amplitude vibrations, so that damping is decoupled via the damping channel.
  • the membrane can be arranged with play between the two nozzle disks or it can be clamped in sections.
  • a hydraulically damping bearing for supporting a motor vehicle assembly comprising a support and a support bearing which are connected to one another by a support spring made of an elastomeric material, the support spring delimiting a working chamber which is separated from a compensation chamber by a separating device , wherein the working chamber and the compensation chamber are filled with a fluid and connected to one another via a damping channel introduced into the separating device.
  • a hydraulically damping bearing 10 is shown, which is used to support a motor vehicle assembly, not shown, such as a motor vehicle engine or a transmission, on a motor vehicle body, not shown.
  • the hydraulically damping bearing 10 has a support bearing 12 and a support 14, which are connected to one another via a support spring 16 made of an elastomeric material.
  • a support spring 16 made of an elastomeric material.
  • the suspension spring 16 absorbs the static loads and provides acoustic insulation.
  • the support bearing 12, the support 14 and the support spring 16 delimit a working chamber 18 which is separated from a compensation chamber 22 by a separating device 20.
  • the compensation chamber 22 is delimited by a compensation membrane 24.
  • the working chamber 18 and the compensation chamber 22 are filled with a fluid.
  • the separating device 20 has a damping channel 26 which connects the working chamber 18 and the compensation chamber 22 to one another in a fluid-conducting manner.
  • the low-frequency vibrations introduced by the motor vehicle assembly are damped or canceled with a large amplitude via the damping channel 26.
  • the vibrations introduced lead to a movement of the suspension spring 16, as a result of which hydraulic pressure is built up within the working chamber 18.
  • the fluid flows from the working chamber 18 via the damping channel 26 into the compensation chamber 22. Due to the small diameter of the damping channel 26 and the associated high mechanical translation, which results from the equivalent, displaced cross section of the suspension spring 16 in relation to the damping channel cross section results, the introduced vibrations are dampened or canceled.
  • the separating device 20 has a first nozzle disk 28 and a second nozzle disk 30, which are made of a first material.
  • the first material can be a plastic, in particular a fiber-reinforced plastic.
  • a membrane 32 made of an elastomeric material is arranged between the nozzle disks 28, 30 and is clamped at the edge between the nozzle disks 28, 30.
  • the membrane 32 is used to decouple high-frequency, small-amplitude vibrations, that is, in the acoustically relevant range, in that the membrane 32 vibrates in the case of high-frequency, small-amplitude vibrations, whereby damping via the damping channel 26 is decoupled.
  • both nozzle disks 28, 30 are provided with an opening, not shown, through which the fluid can flow into the damping channel 26 and / or out of the damping channel 26.
  • the second nozzle disk 30 has a receiving opening 34 into which the first nozzle disk 28 is inserted.
  • the first nozzle disk 28 is inserted into the receiving opening 34 by means of an interference fit.
  • the first nozzle disk 28 divides the damping channel 26 into a first channel section 36 and a second channel section 38. Both channel sections 36, 38 are arranged one above the other.
  • the first nozzle disk 28 has on the outer circumference side a circumferential channel 40 which rests against an inner circumferential wall 42 of the receiving opening 34 and forms the first channel section 36.
  • the channel 40 is approximately C-shaped and has a first leg 44, a second leg 46 and a base 48 connecting the two legs 44, 46 to one another, the first leg 44 separating the two channel sections 36, 38 from one another.
  • the first nozzle disk 28 has a sealing element 50 made of a second material, which lies against the inner circumferential wall 42 of the receiving opening 34 in a sealing manner.
  • the sealing element 50 is arranged at a free end 52 of the first leg 44 and in the present case is designed as a sealing edge which surrounds the first nozzle disk 28, in particular the first leg 44.
  • the sealing element 50 can be designed as a sealing lip. There is an interference fit between the inner peripheral wall 42 and the sealing element 50.
  • the receiving opening 34 has a circumferential shoulder 54 on which the sealing element 50 rests.
  • the sealing element 50 is made of a thermoplastic elastomer.
  • the first nozzle disk 28 and the sealing element 50 can be made using the two-component injection molding process getting produced.
  • the sealing element 50 which is injection-molded onto the first nozzle disk 28 using the two-component injection molding process, can thus be produced cost-effectively and reliably seals the two channel sections 36, 38 from one another. This avoids internal leakage, so that the hydraulically damping bearing 10 has improved damping and thus improved performance.
  • an idle channel 56 is introduced into the separating device 20, which can also be referred to as a damper channel and which can be released or closed by means of a switching device 58.
  • the idle channel 56 reduces the dynamic bearing rigidity when the engine is idling.
  • a column of liquid can oscillate within the idle channel 56, so that the high-frequency engine oscillations that occur when the engine is idling are transmitted in a significantly reduced form to a motor vehicle body (not shown) due to the small effective spring rate.
  • the hydraulically damping bearing 10 works like a conventional bearing, in that low-frequency vibrations with large amplitudes are damped by a fluid displacement within the damping channel 26 and high-frequency vibrations with a small amplitude are isolated or decoupled with the aid of the membrane 32.
  • the switching device 58 has a spring element 60 which is connected to the compensating diaphragm 24 and is supported on a bearing cover 62.
  • the spring element 60 urges the compensating diaphragm 24 against the separating device 20 in order to close the idle channel 56.
  • the switching device 58 is connected via a connection 64 to a vacuum source (not shown), whereby the compensating membrane 24 is moved away from the separating device 20 against the force of the spring element 60 by applying a vacuum to open the idle channel 56.
  • the bearing cover 62 is attached to the support 14 by means of a clip connection.
  • the hydraulically damping bearing 10 is supported on a bearing cover 62 motor vehicle body, not shown. Furthermore, the hydraulically damping bearing 10 is surrounded by a housing 66 which protects the bearing 10 from the effects of heat.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Combined Devices Of Dampers And Springs (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Description

Die vorliegende Erfindung betrifft eine Trennvorrichtung zum Trennen einer Arbeitskammer und einer Ausgleichskammer eines hydraulisch dämpfenden Lagers, aufweisend eine erste Düsenscheibe und eine zweite Düsenscheibe, die aus einem ersten Werkstoff sind und einen Dämpfungskanal bilden, der die Arbeitskammer und die Ausgleichskammer miteinander verbindet. Ferner betrifft die Erfindung ein hydraulisch dämpfendes Lager zur Lagerung eines Kraftfahrzeugaggregats mit einer derartigen Trennvorrichtung.The present invention relates to a separating device for separating a working chamber and a compensation chamber of a hydraulically damping bearing, having a first nozzle disk and a second nozzle disk, which are made of a first material and form a damping channel which connects the working chamber and the compensation chamber. The invention also relates to a hydraulically damping bearing for mounting a motor vehicle assembly with such a separating device.

Ein hydraulisch dämpfendes Lager der eingangs genannten Art wird zur Lagerung eines Kraftfahrzeugaggregats, wie beispielsweise eines Kraftfahrzeugmotors oder eines Getriebes, an einer Kraftfahrzeugkarosserie verwendet, um die vom Kraftfahrzeugaggregat erzeugten Schwingungen zu dämpfen. Ein hydraulisch dämpfendes Lager weist ein Traglager zur Befestigung des Kraftfahrzeugaggregats an dem Lager und ein Auflager auf, die durch eine elastomere Tragfeder miteinander verbunden sind. Die Tragfeder begrenzt zusammen mit dem Auflager eine Arbeitskammer, die über eine Trennvorrichtung von einer Ausgleichskammer getrennt ist. Die Ausgleichskammer ist durch eine Ausgleichsmembran begrenzt.
Die Arbeitskammer und die Ausgleichskammer sind mit einem Fluid gefüllt und über einen in die Trennvorrichtung eingebrachten Dämpfungskanal miteinander verbunden.
A hydraulically damping bearing of the type mentioned at the beginning is used to mount a motor vehicle unit, such as a motor vehicle engine or a transmission, on a motor vehicle body in order to dampen the vibrations generated by the motor vehicle unit. A hydraulically damping bearing has a support bearing for fastening the motor vehicle assembly to the bearing and a support, which are connected to one another by an elastomeric suspension spring. The suspension spring, together with the support, delimits a working chamber which is separated from a compensation chamber by a separating device. The compensation chamber is limited by a compensation membrane.
The working chamber and the compensation chamber are filled with a fluid and connected to one another via a damping channel introduced into the separating device.

Die Dämpfung der vom Kraftfahrzeugaggregat eingeleiteten Schwingungen erfolgt über das hydraulische System, das aus der Arbeitskammer, der Ausgleichskammer und dem Dämpfungskanal gebildet ist. Die eingeleiteten Schwingungen führen zu einer Bewegung der Tragfeder, wodurch ein hydraulischer Druck innerhalb der Arbeitskammer aufgebaut wird. Infolge des Drucks strömt das Fluid von der Arbeitskammer über den Dämpfungskanal in die Ausgleichskammer. Durch den geringen Durchmesser des Dämpfungskanals und der damit verbundenen hohen mechanischen Übersetzung, die sich aus dem äquivalenten, verdrängten Querschnitt der Tragfeder in Relation zu dem Dämpfungskanalquerschnitt ergibt, werden die eingeleiteten Schwingungen gedämpft beziehungsweise getilgt.The damping of the vibrations introduced by the motor vehicle assembly takes place via the hydraulic system, which is formed from the working chamber, the compensation chamber and the damping channel. The introduced vibrations lead to a movement of the suspension spring, whereby hydraulic pressure is built up inside the working chamber. As a result of the pressure, the fluid flows from the Working chamber via the damping channel into the compensation chamber. Due to the small diameter of the damping channel and the associated high mechanical transmission, which results from the equivalent, displaced cross section of the suspension spring in relation to the damping channel cross section, the vibrations introduced are damped or canceled.

US 2013/038006 A1 offenbart ein hydraulisch dämpfendes Lager, das eine Innenhülse, eine Außenhülse und zwei die beiden Hülsen miteinander verbindende Elastomerkörper aufweist. Die beiden Elastomerkörper begrenzen zwei mit Flüssigkeit gefüllte Kammern, die durch eine Trennwand voneinander getrennt sind. Die Trennwand weist ein ringförmiges steifes Element und ein elastisches Element auf, die über ein steifes Rohrelement miteinander verbunden sind. Zwischen dem ringförmigen Element und dem elastischen Element sind Kanäle ausgebildet, die die beiden Kammern, miteinander verbinden. US 2013/038006 A1 discloses a hydraulically damping bearing which has an inner sleeve, an outer sleeve and two elastomer bodies connecting the two sleeves to one another. The two elastomer bodies delimit two chambers filled with liquid, which are separated from one another by a partition. The partition wall has an annular rigid element and an elastic element which are connected to one another via a rigid tubular element. Channels that connect the two chambers to one another are formed between the annular element and the elastic element.

Ferner offenbart EP 1 574 743 A1 ein hydraulisch dämpfendes Lager mit einem Auflager und einem Traglager, die durch eine elastomere Tragfeder miteinander verbunden sind, wobei die Tragfeder eine Arbeitskammer begrenzt, die durch eine Trennvorrichtung von einer Ausgleichskammer getrennt ist, wobei die beiden Kammern über einen in die Trennvorrichtung eingebrachten Dämpfungskanal miteinander verbunden sind. Die Trennvorrichtung weist einen Hauptkörper und einen Abdeckkörper auf, wobei der Abdeckkörper eine Metallplatte und eine daran anvulkanisierte elastomere Dichtungslage umfasst.Also disclosed EP 1 574 743 A1 a hydraulically damping bearing with a support and a support bearing, which are connected to one another by an elastomeric suspension spring, the suspension spring delimiting a working chamber which is separated from a compensation chamber by a separating device, the two chambers being connected to one another via a damping channel introduced into the separating device are. The separating device has a main body and a cover body, the cover body comprising a metal plate and an elastomeric sealing layer vulcanized thereon.

Aus JP S61 144443 A geht ein hydraulisch dämpfendes Lager hervor, dessen Arbeitskammern durch eine Trennvorrichtung getrennt sind, wobei die Trennvorrichtung einen Dämpfungskanal ausbildet, der die beiden Kammern miteinander verbindet. Die Trennvorrichtung umfasst zwei Düsenscheiben, zwischen denen ein Dichtungsring angeordnet ist.Out JP S61 144443 A shows a hydraulically damping bearing, the working chambers of which are separated by a separating device, the separating device forming a damping channel which connects the two chambers to one another. The separating device comprises two nozzle disks, between which a sealing ring is arranged.

Des Weiteren geht aus DE 196 20 971 A1 ein Hydrolager mit einer Trennwand hervor, in die ein Dämpfungskanal eingebracht ist. Die Trennwand besteht aus zwei Teilkanälen, wobei der erste Teilkanal mit einer ersten Hälfte eines Düsenkäfigs und der zweite Kanal mit einer zweiten Hälfte des Düsenkäfigs einstückig ineinander übergehend ausgebildet sind. Die Membran weist zur Abdichtung der beiden Teilkanäle gegeneinander eine Kanaltrennung auf, die bezogen auf die in radialer Richtung beiderseits angrenzenden Teilbereiche dicker ausgebildet ist.Furthermore goes out DE 196 20 971 A1 a hydraulic bearing with a partition wall into which a damping channel is introduced. The partition wall consists of two sub-channels, the first sub-channel with a first half of a nozzle cage and the second channel and a second half of the nozzle cage are formed in one piece and merge into one another. In order to seal the two sub-channels from one another, the membrane has a channel separation that is thicker in relation to the sub-regions adjoining on both sides in the radial direction.

Zudem betrifft DE 10 2015 118 931 A1 , welches den nächstliegenden Stand der Technik darstellt, ein Hydrolager umfassend einen Hydromodul mit einer Tragfeder, die einen Lagerkern abstützt, eine Arbeitskammer umschließt und sich an einem Außenring, an dem ein Deckel festgelegt ist, abstützt, einer von der Arbeitskammer durch eine Zwischenplatte getrennten und von einer Ausgleichsmembran begrenzten Ausgleichskammer, wobei die Ausgleichskammer und die Arbeitskammer mit einer Dämpfungsflüssigkeit gefüllt ist und über einen in der Zwischenplatte angeordneten Dämpfungskanal flüssigkeitsleitend miteinander verbunden sind, und ein das Hydromodul aufnehmendes Gehäuse.Also concerns DE 10 2015 118 931 A1 , which represents the closest prior art, a hydraulic bearing comprising a hydraulic module with a suspension spring, which supports a bearing core, encloses a working chamber and is supported on an outer ring on which a cover is fixed, one separated from the working chamber by an intermediate plate and Compensating chamber bounded by a compensating membrane, the compensating chamber and the working chamber being filled with a damping fluid and being connected to one another in a fluid-conducting manner via a damping channel arranged in the intermediate plate, and a housing accommodating the hydraulic module.

Zudem geht aus DE 10 2012 217 427 A1 ein Hydrolager mit zwei durch eine Düsenscheibe getrennten, mit hydraulischer Flüssigkeit gefüllten Kammern hervor, die durch einen in die Düsenscheibe eingebrachten Kanal flüssigkeitsleitend miteinander verbunden sind. Die Düsenscheibe ist zweiteilig ausgebildet, wobei zwischen den beiden Teilen eine Schaltmembran eingebracht ist, die einen Bypasskanal in der Düsenscheibe zwischen den beiden Kammern strömungsgesteuert verschließt, sofern die axiale Belastung des Hydrolagers ein vorgegebenes Belastungsmaximum übersteigt.Also goes out DE 10 2012 217 427 A1 a hydraulic bearing with two chambers filled with hydraulic fluid, separated by a nozzle disk, which are connected to one another in a fluid-conducting manner by a channel introduced into the nozzle disk. The nozzle disk is designed in two parts, with a switching membrane inserted between the two parts, which closes a bypass channel in the nozzle disk between the two chambers in a flow-controlled manner, provided that the axial load on the hydraulic bearing exceeds a predetermined maximum load.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Trennvorrichtung sowie ein hydraulisch dämpfendes Lager zu schaffen, die eine verbesserte Dämpfung aufweisen.The present invention is based on the object of creating a separating device and a hydraulically damping bearing which have improved damping.

Zur Lösung der Aufgabe werden eine Trennvorrichtung mit den Merkmalen des Anspruchs 1 und ein hydraulisch dämpfendes Lager mit den Merkmalen des Anspruchs 9 vorgeschlagen.To achieve the object, a separating device with the features of claim 1 and a hydraulically damping bearing with the features of claim 9 are proposed.

Vorteilhafte Ausgestaltungen der Trennvorrichtung sind Gegentand der abhängigen Ansprüche.Advantageous refinements of the separating device are the subject of the dependent claims.

Gemäß einem Aspekt wird eine Trennvorrichtung zum Trennen einer Arbeitskammer und einer Ausgleichskammer eines hydraulisch dämpfenden Lagers vorgeschlagen, die eine erste Düsenscheibe und eine zweite Düsenscheibe aufweist, die aus einem ersten Werkstoff sind und einen Dämpfungskanal bilden, der die Arbeitskammer und die Ausgleichskammer miteinander verbindet, wobei die erste Düsenscheibe ein Dichtelement aus einem zweiten Werkstoff aufweist, das an der zweiten Düsenscheibe anliegt, um den Dämpfungskanal abzudichten.According to one aspect, a separating device for separating a working chamber and a compensation chamber of a hydraulically damping bearing is proposed, which has a first nozzle disk and a second nozzle disk which are made of a first material and which form a damping channel which connects the working chamber and the compensation chamber to one another, wherein the first nozzle disk has a sealing element made of a second material which rests against the second nozzle disk in order to seal the damping channel.

Das Dichtelement dichtet den Dämpfungskanal zuverlässig und prozesssicher ab und verhindert so ein Austreten von Fluid aus dem Dämpfungskanal während selbiges von der Arbeitskammer in die Ausgleichskammer strömt, um die eingeleiteten Schwingungen zu bedämpfen. Dadurch werden eine Verschiebung der Frequenzlage und eine Erhöhung der Toleranzen vermieden, so dass ein mit der Trennvorrichtung versehenes hydraulisch dämpfendes Lager eine verbesserte Dämpfung und somit Performance aufweist. Um ein hin und her fließen zwischen den beiden Kammern zu ermöglichen, sind beide Düsenscheiben mit jeweils einer Öffnung versehen, über die Fluid in den Dämpfungskanal und/oder aus dem Dämpfungskanal strömen kann.The sealing element seals off the damping channel reliably and reliably and thus prevents fluid from escaping from the damping channel while the same flows from the working chamber into the compensation chamber in order to dampen the vibrations introduced. This avoids a shift in the frequency position and an increase in the tolerances, so that a hydraulically damping bearing provided with the separating device has improved damping and thus improved performance. In order to enable a back and forth flow between the two chambers, both nozzle disks are each provided with an opening through which fluid can flow into the damping channel and / or out of the damping channel.

In einer vorteilhaften Ausgestaltung sind die erste Düsenscheibe und das Dichtelement im Zwei-Komponenten-Spritzgussverfahren hergestellt. Dadurch kann auf einfache, prozesssichere und kostengünstige Weise das Dichtelement hergestellt und mit der ersten Düsenscheibe verbunden werden. So kann zunächst der erste Werkstoff in eine Kavität einer Spritzgussform eingespritzt werden und anschließend wird der zweite Werkstoff in die Kavität eingespritzt. Ferner können der erste Werkstoff und der zweite Werkstoff gleichzeitig in eine Kavität einer Spritzgussform eingespritzt werden.In an advantageous embodiment, the first nozzle disk and the sealing element are produced in a two-component injection molding process. As a result, the sealing element can be produced and connected to the first nozzle disk in a simple, reliable and cost-effective manner. First the first material can be injected into a cavity of an injection mold and then the second material is injected into the cavity. Furthermore, the first material and the second material can be injected into a cavity of an injection mold at the same time.

In einer vorteilhaften Ausgestaltung ist der erste Werkstoff ein faserverstärkter Kunststoff, und der zweite Werkstoff ist ein thermoplastisches Elastomer. Eine aus faserverstärktem Kunststoff hergestellte Trennvorrichtung weist ein niedriges Gewicht und gleichzeitig eine hohe Festigkeit gegenüber dem in der Arbeitskammer auftretenden hydraulischen Druck auf. Ein aus thermoplastischen Elastomer hergestelltes Dichtelement weist ausreichende Dichteigenschaften zur Abdichtung des Dämpfungskanals auf.In an advantageous embodiment, the first material is a fiber-reinforced plastic and the second material is a thermoplastic elastomer. A separating device made of fiber-reinforced plastic has a low weight and at the same time a high strength against the hydraulic pressure occurring in the working chamber. One made from thermoplastic elastomer Sealing element has sufficient sealing properties to seal the damping channel.

In einer vorteilhaften Ausgestaltung umgibt das Dichtelement die erste Düsenscheibe außenumfangsseitig. Das Dichtelement kann als eine Dichtkante ausgebildet sein, die die erste Düsenscheibe außenumfangsseitig umgibt. Ferner kann das Dichtelement als eine von der ersten Düsenscheibe abragende, insbesondere senkrecht abragende, Dichtlippe ausgebildet sein, die die erste Düsenscheibe außenumfangsseitig umgibt.In an advantageous embodiment, the sealing element surrounds the first nozzle disk on the outer circumference. The sealing element can be designed as a sealing edge which surrounds the first nozzle disk on the outer circumference. Furthermore, the sealing element can be designed as a sealing lip protruding from the first nozzle disk, in particular vertically protruding, which surrounds the first nozzle disk on the outer circumference.

Die zweite Düsenscheibe weist eine Aufnahmeöffnung auf, in die die erste Düsenscheibe eingesetzt ist. Vorteilhaft bildet die in die Aufnahmeöffnung der zweiten Düsenscheibe eingesetzte erste Düsenscheibe zusammen mit der zweiten Düsenscheibe den Dämpfungskanal. Hierzu kann die zweite Düsenscheibe eine kanalförmige Vertiefung aufweisen, die von der ersten Düsenscheibe, insbesondere einem Abschnitt der ersten Düsenscheibe, verschlossen wird. Das Dichtelement liegt bevorzugt an einer Innenumfangswand der Aufnahmeöffnung dichtend an, um den Dämpfungskanal prozesssicher abzudichten. Vorteilhaft ist die erste Düsenscheibe in die Aufnahmeöffnung mittels einer Presspassung eingesetzt, um eine ausreichende Abdichtung des Dämpfungskanals zu gewährleisten.The second nozzle disk has a receiving opening into which the first nozzle disk is inserted. The first nozzle disk inserted into the receiving opening of the second nozzle disk advantageously forms the damping channel together with the second nozzle disk. For this purpose, the second nozzle disk can have a channel-shaped recess which is closed by the first nozzle disk, in particular a section of the first nozzle disk. The sealing element is preferably in sealing contact with an inner circumferential wall of the receiving opening in order to reliably seal the damping channel. The first nozzle disk is advantageously inserted into the receiving opening by means of a press fit in order to ensure sufficient sealing of the damping channel.

Zwischen dem Dichtelement und einer Innenumfangswand der Aufnahmeöffnung besteht eine Übermaßpassung bestehen. Durch die Übermaßpassung wird eine ausreichende Abdichtung des Dämpfungskanals gewährleistet.There is an interference fit between the sealing element and an inner peripheral wall of the receiving opening. The interference fit ensures adequate sealing of the damping channel.

In einer vorteilhaften Ausgestaltung weist die Aufnahmeöffnung einen umlaufenden Absatz auf, an dem das Dichtelement anliegt. Die erste Düsenscheibe wird in die Aufnahmeöffnung eingesetzt, insbesondere eingepresst, bis das Dichtelement an dem Absatz zur Anlage kommt. Die Kombination aus der Übermaßpassung zwischen der Innenumfangswand und dem Dichtelement sowie der Anlage des Dichtelements an einem Absatz gewährleistet ein prozesssicheres Abdichten des Dämpfungskanals.In an advantageous embodiment, the receiving opening has a circumferential shoulder on which the sealing element rests. The first nozzle disk is inserted into the receiving opening, in particular pressed in, until the sealing element comes to rest on the shoulder. The combination of the interference fit between the inner circumferential wall and the sealing element and the contact between the sealing element and a shoulder ensures that the damping channel is reliably sealed.

In einer vorteilhaften Ausgestaltung ist ein Kanal aus einem ersten Kanalabschnitt und einem zweiten Kanalabschnitt gebildet, die durch die erste Düsenscheibe voneinander getrennt und mittels des Dichtelementes gegeneinander abgedichtet sind. Dadurch wird ein Doppelstockkanal gebildet. Ein Doppelstockkanal ermöglicht eine Dämpfungsverschiebung zu niedrigen Frequenzen und weist eine optimierte Entkopplung mit maximal möglicher Offenfläche auf. Vorteilhaft weist die erste Düsenscheibe den ersten Kanalabschnitt und die zweite Düsenscheibe den zweiten Kanalabschnitt auf. In einer vorteilhaften Ausgestaltung sind der erste Kanalabschnitt und der zweite Kanalabschnitt übereinander angeordnet. Ferner können die beiden Kanalabschnitte nebeneinander angeordnet sein.In an advantageous embodiment, a channel is formed from a first channel section and a second channel section, which are separated from one another by the first nozzle disk and sealed from one another by means of the sealing element. This creates a two-tier canal. A double-deck duct enables the attenuation to be shifted to low frequencies and has an optimized decoupling with the maximum possible open area. The first nozzle disk advantageously has the first channel section and the second nozzle disk has the second channel section. In an advantageous embodiment, the first channel section and the second channel section are arranged one above the other. Furthermore, the two channel sections can be arranged next to one another.

In einer vorteilhaften Ausgestaltung weist die erste Düsenscheibe außenumfangsseitig einen Kanal auf, der an der Innenumfangswand einer Aufnahmeöffnung anliegt, um den ersten Kanalabschnitt zu bilden, wobei der Kanal einen ersten Schenkel, einen zweiten Schenkel und eine die beiden Schenkel miteinander verbindende Basis aufweist, wobei an einem freien Ende des ersten Schenkels das Dichtelement angeordnet ist. Bevorzugt ist der Kanal im Querschnitt C-förmig ausgebildet. Weiterhin vorteilhaft trennt der erste Schenkel die beiden Kanalabschnitte voneinander, wobei das an dem freien Ende des ersten Schenkels angeordnete, insbesondere angespritzte, Dichtelement die beiden Kanalabschnitte gegeneinander abdichtet.In an advantageous embodiment, the first nozzle disk has on the outer circumference a channel which rests against the inner circumferential wall of a receiving opening in order to form the first channel section, the channel having a first leg, a second leg and a base connecting the two legs, with an the sealing element is arranged at a free end of the first leg. The channel is preferably C-shaped in cross section. Furthermore advantageously, the first leg separates the two channel sections from one another, wherein the one arranged at the free end of the first leg, In particular, the injection-molded sealing element seals the two channel sections from one another.

In einer vorteilhaften Ausgestaltung ist zwischen den Düsenscheiben eine Membran aufgenommen. Die Membran ist aus einem elastischen, insbesondere elastomeren Material und dient zur Entkopplung hochfrequenter, kleinamplitudiger Schwingungen. Hierzu schwingt die Membran bei hochfrequenten kleinamplitudigen Schwingungen, so dass eine Dämpfung über den Dämpfungskanal entkoppelt wird. Die Membran kann zwischen den beiden Düsenscheiben mit Spiel angeordnet oder abschnittsweise geklemmt sein.In an advantageous embodiment, a membrane is accommodated between the nozzle disks. The membrane is made of an elastic, in particular elastomeric material and is used to decouple high-frequency, small-amplitude vibrations. For this purpose, the membrane vibrates with high-frequency, small-amplitude vibrations, so that damping is decoupled via the damping channel. The membrane can be arranged with play between the two nozzle disks or it can be clamped in sections.

Gemäß einem weiteren Aspekt wird ein hydraulisch dämpfendes Lager zur Lagerung eines Kraftfahrzeugaggregats vorgeschlagen, aufweisend ein Auflager und ein Traglager, die durch eine Tragfeder aus einem elastomeren Material miteinander verbunden sind, wobei die Tragfeder eine Arbeitskammer begrenzt, die durch eine Trennvorrichtung von einer Ausgleichskammer getrennt ist, wobei die Arbeitskammer und die Ausgleichskammer mit einem Fluid gefüllt und über einen in die Trennvorrichtung eingebrachten Dämpfungskanal miteinander verbunden sind.According to a further aspect, a hydraulically damping bearing for supporting a motor vehicle assembly is proposed, comprising a support and a support bearing which are connected to one another by a support spring made of an elastomeric material, the support spring delimiting a working chamber which is separated from a compensation chamber by a separating device , wherein the working chamber and the compensation chamber are filled with a fluid and connected to one another via a damping channel introduced into the separating device.

Im Folgenden werden eine Trennvorrichtung, ein hydraulisch dämpfendes Lager sowie weitere Merkmale und Vorteile anhand eines Ausführungsbeispiels näher erläutert, die in den Figuren schematisch dargestellt sind. Hierbei zeigen:

Fig. 1
einen Vertikalschnitt durch ein hydraulisch dämpfendes Lager mit einer Trennvorrichtung; und
Fig. 2
eine vergrößerte Ansicht der in Fig. 1 dargestellten Trennvorrichtung.
In the following, a separating device, a hydraulically damping bearing and further features and advantages are explained in more detail using an exemplary embodiment, which are shown schematically in the figures. Here show:
Fig. 1
a vertical section through a hydraulically damping bearing with a separating device; and
Fig. 2
an enlarged view of the in Fig. 1 shown separator.

In Fig. 1 ist ein hydraulisch dämpfendes Lager 10 gezeigt, das zur Lagerung eines nicht dargestellten Kraftfahrzeugaggregats, wie beispielsweise eines Kraftfahrzeugmotors oder eines Getriebes, an einer nicht dargestellten Kraftfahrzeugkarosserie dient.In Fig. 1 a hydraulically damping bearing 10 is shown, which is used to support a motor vehicle assembly, not shown, such as a motor vehicle engine or a transmission, on a motor vehicle body, not shown.

Das hydraulisch dämpfende Lager 10 weist ein Traglager 12 und ein Auflager 14 auf, die über eine Tragfeder 16 aus einem elastomeren Werkstoff miteinander verbunden sind. In das Traglager 12 ist ein Bolzen 13 zur Befestigung eines nicht dargestellten Kraftfahrzeugaggregats eingebracht. Die Tragfeder 16 nimmt die statischen Lasten auf und bewirkt eine akustische Isolierung.The hydraulically damping bearing 10 has a support bearing 12 and a support 14, which are connected to one another via a support spring 16 made of an elastomeric material. In the support bearing 12 is a bolt 13 for fastening a not introduced motor vehicle assembly. The suspension spring 16 absorbs the static loads and provides acoustic insulation.

Das Traglager 12, das Auflager 14 und die Tragfeder 16 begrenzen eine Arbeitskammer 18, die durch eine Trennvorrichtung 20 von einer Ausgleichskammer 22 getrennt ist. Die Ausgleichskammer 22 wird durch eine Ausgleichsmembran 24 begrenzt. Die Arbeitskammer 18 und die Ausgleichskammer 22 sind mit einem Fluid gefüllt. Die Trennvorrichtung 20 weist einen Dämpfungskanal 26 auf, der die Arbeitskammer 18 und die Ausgleichskammer 22 flüssigkeitsleitend miteinander verbindet.The support bearing 12, the support 14 and the support spring 16 delimit a working chamber 18 which is separated from a compensation chamber 22 by a separating device 20. The compensation chamber 22 is delimited by a compensation membrane 24. The working chamber 18 and the compensation chamber 22 are filled with a fluid. The separating device 20 has a damping channel 26 which connects the working chamber 18 and the compensation chamber 22 to one another in a fluid-conducting manner.

Über den Dämpfungskanal 26 werden die durch das Kraftfahrzeugaggregat eingeleiteten niederfrequenten Schwingungen mit großer Amplitude gedämpft beziehungsweise getilgt. Die eingeleiteten Schwingungen führen zu einer Bewegung der Tragfeder 16, wodurch ein hydraulischer Druck innerhalb der Arbeitskammer 18 aufgebaut wird. Infolge des Drucks strömt das Fluid von der Arbeitskammer 18 über den Dämpfungskanal 26 in die Ausgleichskammer 22. Durch den geringen Durchmesser des Dämpfungskanals 26 und der damit verbundenen hohen mechanischen Übersetzung, die sich aus dem äquivalenten, verdrängten Querschnitt der Tragfeder 16 in Relation zu dem Dämpfungskanalquerschnitt ergibt, werden die eingeleiteten Schwingungen gedämpft beziehungsweise getilgt.The low-frequency vibrations introduced by the motor vehicle assembly are damped or canceled with a large amplitude via the damping channel 26. The vibrations introduced lead to a movement of the suspension spring 16, as a result of which hydraulic pressure is built up within the working chamber 18. As a result of the pressure, the fluid flows from the working chamber 18 via the damping channel 26 into the compensation chamber 22. Due to the small diameter of the damping channel 26 and the associated high mechanical translation, which results from the equivalent, displaced cross section of the suspension spring 16 in relation to the damping channel cross section results, the introduced vibrations are dampened or canceled.

Wie in Fig. 2 ersichtlich ist, weist die Trennvorrichtung 20 eine erste Düsenscheibe 28 und eine zweite Düsenscheibe 30 auf, die aus einem ersten Werkstoff sind. Der erste Werkstoff kann ein Kunststoff, insbesondere ein faserverstärkter Kunststoff, sein. Zwischen den Düsenscheiben 28, 30 ist eine Membran 32 aus einem elastomeren Werkstoff angeordnet, die jeweils randseitig zwischen den Düsenscheiben 28, 30 geklemmt ist.As in Fig. 2 As can be seen, the separating device 20 has a first nozzle disk 28 and a second nozzle disk 30, which are made of a first material. The first material can be a plastic, in particular a fiber-reinforced plastic. A membrane 32 made of an elastomeric material is arranged between the nozzle disks 28, 30 and is clamped at the edge between the nozzle disks 28, 30.

Die Membran 32 dient zur Entkopplung hochfrequenter, kleinamplitudiger Schwingungen, das heißt, im akustisch relevanten Bereich, indem die Membran 32 bei hochfrequenten, kleinamplitudigen Schwingungen schwingt, wodurch eine Dämpfung über den Dämpfungskanal 26 entkoppelt wird.The membrane 32 is used to decouple high-frequency, small-amplitude vibrations, that is, in the acoustically relevant range, in that the membrane 32 vibrates in the case of high-frequency, small-amplitude vibrations, whereby damping via the damping channel 26 is decoupled.

Um ein hin und her fließen zwischen den beiden Kammern zu ermöglichen, sind beide Düsenscheiben 28, 30 mit einer nicht dargestellten Öffnung versehen, über die das Fluid in den Dämpfungskanal 26 und/oder aus dem Dämpfungskanal 26 strömen kann.In order to enable a back and forth flow between the two chambers, both nozzle disks 28, 30 are provided with an opening, not shown, through which the fluid can flow into the damping channel 26 and / or out of the damping channel 26.

Die zweite Düsenscheibe 30 weist eine Aufnahmeöffnung 34 auf, in die die erste Düsenscheibe 28 eingesetzt ist. Die erste Düsenscheibe 28 ist mittels einer Übermaßpassung in die Aufnahmeöffnung 34 eingesetzt.The second nozzle disk 30 has a receiving opening 34 into which the first nozzle disk 28 is inserted. The first nozzle disk 28 is inserted into the receiving opening 34 by means of an interference fit.

Wie in Fig. 2 ersichtlich ist, unterteilt die erste Düsenscheibe 28 den Dämpfungskanal 26 in einen ersten Kanalabschnitt 36 und einen zweiten Kanalabschnitt 38. Beide Kanalabschnitte 36, 38 sind übereinander angeordnet.As in Fig. 2 As can be seen, the first nozzle disk 28 divides the damping channel 26 into a first channel section 36 and a second channel section 38. Both channel sections 36, 38 are arranged one above the other.

Die erste Düsenscheibe 28 weist außenumfangsseitig einen umlaufenden Kanal 40 auf, der an einer Innenumfangswand 42 der Aufnahmeöffnung 34 anliegt und den ersten Kanalabschnitt 36 bildet. Der Kanal 40 ist näherungsweise C-förmig ausgebildet und weist einen ersten Schenkel 44, einen zweiten Schenkel 46 und eine die beiden Schenkel 44, 46 miteinander verbindende Basis 48 auf, wobei der erste Schenkel 44 die beiden Kanalabschnitte 36, 38 voneinander trennt.The first nozzle disk 28 has on the outer circumference side a circumferential channel 40 which rests against an inner circumferential wall 42 of the receiving opening 34 and forms the first channel section 36. The channel 40 is approximately C-shaped and has a first leg 44, a second leg 46 and a base 48 connecting the two legs 44, 46 to one another, the first leg 44 separating the two channel sections 36, 38 from one another.

Um die beiden Kanalabschnitte 36, 38 gegeneinander abzudichten, weist die erste Düsenscheibe 28 ein Dichtelement 50 aus einem zweiten Werkstoff auf, das dichtend an der Innenumfangswand 42 der Aufnahmeöffnung 34 anliegt. Das Dichtelement 50 ist an einem freien Ende 52 des ersten Schenkels 44 angeordnet und ist vorliegend als eine Dichtkante ausgebildet, die die erste Düsenscheibe 28, insbesondere den ersten Schenkel 44, umgibt. Alternativ kann das Dichtelement 50 als eine Dichtlippe ausgebildet sein. Zwischen der Innenumfangswand 42 und dem Dichtelement 50 besteht eine Übermaßpassung.In order to seal the two channel sections 36, 38 against one another, the first nozzle disk 28 has a sealing element 50 made of a second material, which lies against the inner circumferential wall 42 of the receiving opening 34 in a sealing manner. The sealing element 50 is arranged at a free end 52 of the first leg 44 and in the present case is designed as a sealing edge which surrounds the first nozzle disk 28, in particular the first leg 44. Alternatively, the sealing element 50 can be designed as a sealing lip. There is an interference fit between the inner peripheral wall 42 and the sealing element 50.

Um eine verbesserte Abdichtung der beiden Kanalabschnitte 36, 38 zu erzielen, weist die Aufnahmeöffnung 34 einen umlaufenden Absatz 54 auf, an dem das Dichtelement 50 anliegt.In order to achieve improved sealing of the two channel sections 36, 38, the receiving opening 34 has a circumferential shoulder 54 on which the sealing element 50 rests.

Das Dichtelement 50 ist aus einem thermoplastischen Elastomer. Dadurch können die erste Düsenscheibe 28 und das Dichtelement 50 im Zwei-Komponenten-Spritzgussverfahren hergestellt werden. Das im Zwei-Komponenten-Spritzgussverfahren an die erste Düsenscheibe 28 angespritzte Dichtelement 50 ist somit kostengünstig herstellbar und dichtet zuverlässig die beiden Kanalabschnitten 36, 38 gegeneinander ab. Dadurch wird eine interne Leckage vermieden, so dass das hydraulisch dämpfende Lager 10 eine verbesserte Dämpfung und somit Performance aufweist.The sealing element 50 is made of a thermoplastic elastomer. As a result, the first nozzle disk 28 and the sealing element 50 can be made using the two-component injection molding process getting produced. The sealing element 50, which is injection-molded onto the first nozzle disk 28 using the two-component injection molding process, can thus be produced cost-effectively and reliably seals the two channel sections 36, 38 from one another. This avoids internal leakage, so that the hydraulically damping bearing 10 has improved damping and thus improved performance.

Wie zudem in Fig. 1 ersichtlich ist, ist in die Trennvorrichtung 20 ein Leerlaufkanal 56 eingebracht, der auch als Tilgerkanal bezeichnet werden kann, und der mittels einer Schaltvorrichtung 58 freigebbar oder verschließbar ist.As also in Fig. 1 As can be seen, an idle channel 56 is introduced into the separating device 20, which can also be referred to as a damper channel and which can be released or closed by means of a switching device 58.

Der Leerlaufkanal 56 reduziert in der Offenstellung die dynamische Lagersteifigkeit im Motorleerlauf. In der Offenstellung kann eine Flüssigkeitssäule innerhalb des Leerlaufkanals 56 schwingen, so dass die im Motorleerlauf auftretenden hochfrequenten Motorschwingungen aufgrund der kleinen wirksamen Federrate in deutlich gemilderter Form auf eine nicht dargestellte Kraftfahrzeugkarosserie übertragen werden.In the open position, the idle channel 56 reduces the dynamic bearing rigidity when the engine is idling. In the open position, a column of liquid can oscillate within the idle channel 56, so that the high-frequency engine oscillations that occur when the engine is idling are transmitted in a significantly reduced form to a motor vehicle body (not shown) due to the small effective spring rate.

Wenn der Tilgerkanal 56 geschlossen ist, arbeitet das hydraulisch dämpfende Lager 10 wie ein herkömmliches Lager, indem niederfrequente Schwingungen mit großer Amplitude durch eine Flüssigkeitsverschiebung innerhalb des Dämpfungskanals 26 gedämpft und hochfrequente Schwingungen mit kleiner Amplitude mit Hilfe der Membran 32 isoliert beziehungsweise entkoppelt werden.When the damper channel 56 is closed, the hydraulically damping bearing 10 works like a conventional bearing, in that low-frequency vibrations with large amplitudes are damped by a fluid displacement within the damping channel 26 and high-frequency vibrations with a small amplitude are isolated or decoupled with the aid of the membrane 32.

Die Schaltvorrichtung 58 weist ein Federelement 60 auf, das mit der Ausgleichsmembran 24 verbunden ist und sich an einem Lagerdeckel 62 abstützt. Das Federelement 60 drängt die Ausgleichsmembran 24 gegen die Trennvorrichtung 20, um den Leerlaufkanal 56 zu verschließen. Zum Öffnen des Leerlaufkanals 56 ist die Schaltvorrichtung 58 über einen Anschluss 64 mit einer nicht dargestellten Unterdruckquelle verbunden, wobei durch Anlegen eines Unterdrucks die Ausgleichsmembran 24 gegen die Kraft des Federelements 60 von der Trennvorrichtung 20 weg bewegt wird, um den Leerlaufkanal 56 zu öffnen.The switching device 58 has a spring element 60 which is connected to the compensating diaphragm 24 and is supported on a bearing cover 62. The spring element 60 urges the compensating diaphragm 24 against the separating device 20 in order to close the idle channel 56. To open the idle channel 56, the switching device 58 is connected via a connection 64 to a vacuum source (not shown), whereby the compensating membrane 24 is moved away from the separating device 20 against the force of the spring element 60 by applying a vacuum to open the idle channel 56.

Der Lagerdeckel 62 ist an dem Auflager 14 mittels einer Clipsverbindung befestigt. Über den Lagerdeckel 62 stützt sich das hydraulisch dämpfende Lager 10 an einer nicht dargestellten Kraftfahrzeugkarosserie ab. Ferner ist das hydraulisch dämpfende Lager 10 von einem Gehäuse 66 umgeben, das das Lager 10 vor Wärmeeinflüssen schützt.The bearing cover 62 is attached to the support 14 by means of a clip connection. The hydraulically damping bearing 10 is supported on a bearing cover 62 motor vehicle body, not shown. Furthermore, the hydraulically damping bearing 10 is surrounded by a housing 66 which protects the bearing 10 from the effects of heat.

BezugszeichenlisteList of reference symbols

1010
hydraulisch dämpfendes Lagerhydraulically damping bearing
1212th
TraglagerSupport bearing
1313
Bolzenbolt
1414th
AuflagerIn stock
1616
TragfederSuspension spring
1818th
ArbeitskammerLabor Chamber
2020th
TrennvorrichtungSeparator
2222nd
AusgleichskammerCompensation Chamber
2424
AusgleichsmembranCompensation membrane
2626th
DämpfungskanalDamping channel
2828
erste Düsenscheibefirst nozzle disc
3030th
zweite Düsenscheibesecond nozzle disc
3232
Membranmembrane
3434
AufnahmeöffnungReceiving opening
3636
erster Kanalabschnittfirst channel section
3838
zweiter Kanalabschnittsecond canal section
4040
Kanalchannel
4242
InnenumfangswandInner peripheral wall
4444
erster Schenkelfirst leg
4646
zweiter Schenkelsecond leg
4848
BasisBase
5050
DichtelementSealing element
5252
freies Endefree end
5454
Absatzparagraph
5656
LeerlaufkanalIdle channel
5858
SchaltvorrichtungSwitching device
6060
FederelementSpring element
6262
LagerdeckelBearing cap
6464
Anschlussconnection
6666
Gehäusecasing

Claims (9)

  1. Separating device (20) for separating a working chamber (18) and a compensation chamber (22) of a hydraulically damping bearing (10), comprising a first nozzle disc (28) and a second nozzle disc (30), which are made of a first material and form a damping channel (26) which can connect the working chamber (18) and the compensation chamber (22) to one another, the second nozzle disc (30) having a receiving opening (34), into which the first nozzle disc (28) is inserted, characterised in that the first nozzle disc (28) has a sealing element (50) made of a second material which abuts the second nozzle disc (30) in order to seal the damping channel (26), wherein an interference fit exists between the sealing element (50) and an inner circumferential wall (42) of the receiving opening (34).
  2. Separating device (20) according to claim 1, characterised in that the first nozzle disc (28) and the sealing element (50) are produced in a two-component injection moulding process.
  3. Separating device (20) according to claim 1 or 2, characterised in that the first material is a fibre-reinforced plastic and that the second material is a thermoplastic elastomer.
  4. Separating device (20) according to one of the preceding claims, characterised in that the sealing element (50) surrounds the first nozzle disc (28) on the outer circumference.
  5. Separating device (20) according to one of the preceding claims, characterised in that the receiving opening (34) has a circumferential shoulder (54) against which the sealing element (50) rests.
  6. Separating device (20) according to one of the preceding claims, characterised in that the channel (40) is formed from a first channel section (36) and a second channel section (38), which are separated from one another by the first nozzle disc (28) and which are sealed against one another by the sealing element (50).
  7. Separating device (20) according to claim 6, characterised in that the first nozzle disc (28) has a channel (40) on the outer circumferential side which abuts the inner circumferential wall (42) of the receiving opening (34) to form the first channel section (36), wherein the channel (40) comprises a first leg (44), a second leg (46) and a base (48) connecting the two legs (44, 46) together, wherein the sealing element (50) is arranged at a free end (52) of the first leg (44).
  8. Separating device (20) according to one of the preceding claims, characterised in that a membrane (32) is included between the nozzle discs (28, 30).
  9. Hydraulically damping bearing (10) for mounting a motor vehicle unit, comprising a bearing (14) and a support bearing (12) which are connected to one another by a support spring (16) made of an elastomeric material, the support spring (16) delimiting a working chamber (18), which is separated from an compensation chamber (22) by a separating device (20) according to one of claims 1 to 8, the working chamber (18) and the compensation chamber (22) being filled with a fluid and being connected to one another via a damping channel (26) introduced into the separating device (20).
EP18721762.5A 2017-06-01 2018-04-30 Partition member for separating a working chamber and a compensation chamber in a hydraulic mounting and a hydraulic mounting Active EP3631237B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017112168.4A DE102017112168B4 (en) 2017-06-01 2017-06-01 Separating device for separating a working chamber and a compensation chamber of a hydraulically damping bearing as well as a hydraulically damping bearing
PCT/EP2018/061047 WO2018219568A1 (en) 2017-06-01 2018-04-30 Separation device for separating a working chamber and a compensation chamber of a hydraulically damping bearing, and a hydraulically damping bearing

Publications (2)

Publication Number Publication Date
EP3631237A1 EP3631237A1 (en) 2020-04-08
EP3631237B1 true EP3631237B1 (en) 2020-12-30

Family

ID=62104283

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18721762.5A Active EP3631237B1 (en) 2017-06-01 2018-04-30 Partition member for separating a working chamber and a compensation chamber in a hydraulic mounting and a hydraulic mounting

Country Status (5)

Country Link
US (1) US11268590B2 (en)
EP (1) EP3631237B1 (en)
CN (1) CN110678668B (en)
DE (1) DE102017112168B4 (en)
WO (1) WO2018219568A1 (en)

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CN113983114B (en) * 2021-11-27 2023-02-17 安徽江淮汽车集团股份有限公司 Multi-inertia channel type power assembly hydraulic suspension with switchable states

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Also Published As

Publication number Publication date
US11268590B2 (en) 2022-03-08
EP3631237A1 (en) 2020-04-08
DE102017112168A1 (en) 2018-12-06
DE102017112168B4 (en) 2021-04-29
CN110678668B (en) 2021-05-25
US20200109759A1 (en) 2020-04-09
CN110678668A (en) 2020-01-10
WO2018219568A1 (en) 2018-12-06

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